CN108247015A - A kind of improved low-pressure casting die of aluminum vehicle wheel - Google Patents

A kind of improved low-pressure casting die of aluminum vehicle wheel Download PDF

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Publication number
CN108247015A
CN108247015A CN201810156690.8A CN201810156690A CN108247015A CN 108247015 A CN108247015 A CN 108247015A CN 201810156690 A CN201810156690 A CN 201810156690A CN 108247015 A CN108247015 A CN 108247015A
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CN
China
Prior art keywords
cavity
hump
annular branch
side mould
aperture
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Application number
CN201810156690.8A
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Chinese (zh)
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CN108247015B (en
Inventor
王凯庆
绳松
王英峰
徐献义
李昌海
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CITIC Dicastal Co Ltd
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CITIC Dicastal Co Ltd
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Priority to CN201810156690.8A priority Critical patent/CN108247015B/en
Publication of CN108247015A publication Critical patent/CN108247015A/en
Priority to US16/050,097 priority patent/US10549339B2/en
Priority to MA45316A priority patent/MA45316B1/en
Priority to EP19158920.9A priority patent/EP3546085B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00Pressure casting; Vacuum casting
    • B22D18/04Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/22Moulds for peculiarly-shaped castings
    • B22C9/28Moulds for peculiarly-shaped castings for wheels, rolls, or rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22CFOUNDRY MOULDING
    • B22C9/00Moulds or cores; Moulding processes
    • B22C9/06Permanent moulds for shaped castings
    • B22C9/065Cooling or heating equipment for moulds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/005Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of rolls, wheels or the like

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

The invention discloses a kind of improved low-pressure casting die of aluminum vehicle wheel, in side mould(7)Cavity surface, corresponding hump position setting V-groove(72), in side mould(7)Back of the body intracavitary, corresponding hump position setting cavity(71), the cavity of side mould(71)Interior setting cooling pipe(8), main air hose(81)Perpendicular to annular branch(82), for single air inlet form;Annular branch(82)Concentric with wheel casting, air hose is 5 10mm apart from cavity bottom surface;Annular branch(82)Both ends welding blocks(84), to form the pipeline of closing;In annular branch(81)Upper setting outlet air aperture(83), aperture is axially perpendicular to cavity bottom surface;Outlet air aperture(83)A diameter of 3mm, 10 15mm of spacing is evenly distributed on circumferencial direction;The present invention increases the heat dissipation area of mold for hump position, improves the natural cooling ability of mold.

Description

A kind of improved low-pressure casting die of aluminum vehicle wheel
Technical field
The present invention relates to casting fields, are intended to eliminate the low of aluminum vehicle wheel hump spot shrinkage defect more particularly to a kind of Press casting mould.
Background technology
In the production of aluminum vehicle wheel low pressure casting, the hump of inner rim position(A-quadrant in Fig. 1)Structure is thick big, forms Apparent thermal center is the relatively conventional position of casting flaw.Hump is in the distal end for filling type, and so far temperature has dropped for molten aluminum flowing It is much lower, shrinkage defect can occur due to front end feeding capacity deficiency;The position casting structure is more thick big, and positioned at inner rim Among wheel rim, effective cooling often can not be directly arranged on mold, causes the aggregation of heat, molten aluminum setting rate is slow, Cast-internal coarse grains, mechanical property are low.In actual production, because hump position casting it is unqualified caused by waste product account for compared with Big ratio, all serious forming quality for affecting wheel, reduces to the success rate of client's sample presentation.
Invention content
Present invention aims to solve the deficiencies of the prior art, and provides a kind of a kind of low pressure cast aluminum wheel die improved, The structure has effectively eliminated hump thermal center, the shrinkage defect for solving cast-internal by strengthening Local cooling;Crystalline substance is refined Grain tissue improves the mechanical property of wheel, meets the quality requirement of client.
A kind of improved low-pressure casting die of aluminum vehicle wheel, including bed die, sprue cup, sprue bush, filter screen, spreader, side Mould, backform, cooling pipe;Wherein backform, bed die, side mould together constitute the cavity of mold, ensure that the smooth of wheel casting Forming.
For hump position, V-groove is set in the model Cavity surface of side, is designed with the shape with hump profile, on length direction Including entire thermal center region;Ditch groove depth 1-1.5mm, 60-120 ° of angle, on side, the circumferentially spaced about 10mm of mould is evenly distributed with.
The back of the body intracavitary of mould on side, the position setting cavity of corresponding hump, with wheel casting concentric design, structure annular in shape; The bottom surface of cavity is designed with the shape with hump profile, is 8-12mm away from cavity surface wall thickness value;The height dimension of cavity and hump thermal center Range is suitable;The two sides of cavity are left to the safe wall thickness of few 10mm far from side mould mating surface, to ensure the use intensity of mold.
Stainless steel tube is selected to make cooling pipe, including main air hose and annular branch two large divisions;Main air hose perpendicular to Annular branch, and it is designed as single air inlet form;Annular branch and wheel casting concentric design, air hose are 5- apart from cavity bottom surface 10mm;Annular branch both ends need to carry out welding closure, to form the pipeline of closing;Wind aperture is processed on annular branch road, it is small Hole is axially perpendicular to cavity bottom surface;Outlet air hole diameter is designed as 3mm, and spacing 10-15mm is evenly distributed on circumferencial direction;Cooling is opened When, compressed air acts on die surface by outlet air aperture, and quickly takes away the heat of aggregation, so as to fulfill the cooling of casting Solidification.
The cooling pipe made is installed in the cavity of side mould, is fixed with welding or bolted mode, To ensure work well.When filling type and starting 20-30s, the cooling of hump position is opened, closes, flows after inner rim completely solidification General control is measured in 40-80m3/ h moves in circles by this technological parameter, you can realizes that hump thermal center position is flawless continuous steady Fixed production.
The configuration of the present invention is simple, it is easy to accomplish:For hump position, groove is designed in the model Cavity surface of side, increases mould The heat dissipation area of tool improves the natural cooling ability of mold;On side, mould back of the body chamber processes cooling cavities and is mounted with cooling tube Road has carried out thermal center to concentrate cooling, has realized the quick export of heat, improve the setting rate of molten aluminum, ensure that effectively Feeding, the defects of preferably resolving shrinkage porosite, the coarse grains that casting easily occurs;The synthesis mechanical property of product is improved simultaneously Can, there has also been significantly improve for the safety index of wheel.
Description of the drawings
Fig. 1 is improved low pressure casting wheel mold assembling schematic diagram in the present invention.
Fig. 2 is that side mould cools down channel layout schematic diagram in the present invention.
Fig. 3 is mould cooling pipe structure diagram in side in the present invention.
In figure:A- hump thermal centers, 1- bed dies, 2- sprue cups, 3- sprue bush, 4- filter screens, 5- spreaders, 6- Backform, 7- sides mould, 71- cavitys, 72- grooves, 8- cooling pipes, the main air hoses of 81-, 82- annular branches, 83- outlet air are small Hole, 84- welderings are stifled.
Specific embodiment
A kind of improved low-pressure casting die of aluminum vehicle wheel, including bed die 1, sprue cup 2, sprue bush 3, filter screen 4, spreader 5th, backform 6, side mould 7, cooling pipe 8;Wherein, bed die 1, backform 6, side mould 7 together constitute the cavity of mold, ensure that wheel The smooth forming of casting.
Aluminum vehicle wheel low pressure casting belongs to bottom centre's cast, and sprue cup 2, sprue bush 3 and filter screen 4 constitute main pour Injection system, and in the centre bore of bed die 1, when high temperature molten aluminum enters cavity, put down under the shunting guiding role of spreader 5 Surely, uniformly, smoothly fill type, to ensure the subsequently good solidification and crystallization process of casting.
For hump A positions, V-groove 72 is processed in the cavity surface of side mould 7, is designed with the shape with hump profile, it is long It spends and includes entire thermal center region on direction;72 depth 1-1.5mm of groove, 60-120 ° of angle, on side, the circumferentially spaced about 10mm of mould is equal Cloth;To ensure to make precision, avoid the occurrence of viscous aluminium problem, groove needs to select lathe number Milling Machining.
The back of the body intracavitary of mould 7 on side, the position of corresponding hump process cavity 71, and wheel casting concentric design, annularly Structure;The bottom surface of cavity 71 is designed with the shape with hump profile, is 8-12mm away from cavity surface wall thickness value;The height dimension of cavity 71 with Hump thermal center range is suitable;The two sides of cavity 71 are left to the safe wall thickness of few 10mm far from side mould mating surface, to ensure mold Use intensity.
Stainless steel tube is selected to make cooling pipe 8, including 82 two large divisions of main air hose 81 and annular branch;Main air hose 81 Perpendicular to annular branch 82, and it is designed as single air inlet form;Annular branch 82 and wheel casting concentric design, air hose is apart from cavity Bottom surface is 5-10mm;Annular 82 both ends of branch need to carry out welding and block 84, to form the pipeline of closing;Add on annular branch 81 Work outlet air aperture 83, aperture is axially perpendicular to cavity bottom surface;83 diameter design of outlet air aperture is 3mm, spacing 10- on circumferencial direction 15mm is evenly distributed with;When cooling is opened, compressed air acts on die surface by outlet air aperture, and quickly takes away the heat of aggregation, So as to fulfill the cooling solidification of casting.
The cooling pipe 8 made is installed in the cavity 71 of side mould, is fixed with welding or bolted mode It is good, to ensure work well.When filling type and starting 20-30s, the cooling of hump position is opened, is closed after inner rim completely solidification, Flow general control is in 40-80m3/ h moves in circles by this technological parameter, you can realizes that hump thermal center position is flawless continuous Steady production.
The configuration of the present invention is simple, it is easy to accomplish:For hump position, groove is designed in the model Cavity surface of side, increases mould The heat dissipation area of tool improves the natural cooling ability of mold;On side, mould back of the body chamber processes cooling cavities and is mounted with cooling tube Road has carried out thermal center to concentrate cooling, has realized the quick export of heat, improve the setting rate of molten aluminum, ensure that effectively Feeding, the defects of preferably resolving shrinkage porosite, the coarse grains that casting easily occurs;The synthesis mechanical property of product is improved simultaneously Can, there has also been significantly improve for the safety index of wheel.

Claims (1)

1. a kind of improved low-pressure casting die of aluminum vehicle wheel, including bed die(1), sprue cup(2), sprue bush(3), filter screen(4)、 Spreader(5), backform(6), Bian Mo(7), cooling pipe(8);It is characterized in that:
In side mould(7)Cavity surface, corresponding hump position setting V-groove(72), it is profile-followed with hump profile, include on length direction Entire thermal center region;Groove(72)Depth 1-1.5mm, 60-120 ° of angle, on side, the circumferentially spaced about 10mm of mould is evenly distributed with;
In side mould(7)Back of the body intracavitary, corresponding hump position setting cavity(71), with wheel casting concentric design, structure annular in shape; Cavity(71)Bottom surface and hump profile it is profile-followed, away from cavity surface wall thickness value be 8-12mm;Cavity(71)Height dimension and hump Thermal center range is suitable;Cavity(71)Two sides far from side mould mating surface distance be at least 10mm;
The cavity of side mould(71)Interior setting cooling pipe(8), cooling pipe(8)Including main air hose(81)With annular branch(82); Main air hose(81)Perpendicular to annular branch(82), for single air inlet form;Annular branch(82)It is concentric with wheel casting, air hose distance Cavity bottom surface is 5-10mm;Annular branch(82)Both ends welding blocks(84), to form the pipeline of closing;In annular branch(81) Upper setting outlet air aperture(83), aperture is axially perpendicular to cavity bottom surface;Outlet air aperture(83)A diameter of 3mm, on circumferencial direction between It is evenly distributed with away from 10-15mm.
CN201810156690.8A 2018-03-30 2018-03-30 Modified aluminium wheel low pressure casting mould Active CN108247015B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201810156690.8A CN108247015B (en) 2018-03-30 2018-03-30 Modified aluminium wheel low pressure casting mould
US16/050,097 US10549339B2 (en) 2018-03-30 2018-07-31 Low-pressure casting mold for aluminum wheel
MA45316A MA45316B1 (en) 2018-03-30 2019-02-22 Low pressure casting mold for aluminum wheel
EP19158920.9A EP3546085B1 (en) 2018-03-30 2019-02-22 Low-pressure casting mold for aluminum wheel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810156690.8A CN108247015B (en) 2018-03-30 2018-03-30 Modified aluminium wheel low pressure casting mould

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CN108247015A true CN108247015A (en) 2018-07-06
CN108247015B CN108247015B (en) 2023-01-24

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US (1) US10549339B2 (en)
EP (1) EP3546085B1 (en)
CN (1) CN108247015B (en)
MA (1) MA45316B1 (en)

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KR101699242B1 (en) * 2015-08-10 2017-01-24 핸즈코퍼레이션주식회사 One-piece wheel manufacturing method without a hub
CN110722131B (en) * 2019-11-01 2021-04-16 台山市长富铝业有限公司 Low-pressure casting die of split type aluminum alloy spoke

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Also Published As

Publication number Publication date
EP3546085B1 (en) 2020-11-11
US10549339B2 (en) 2020-02-04
MA45316B1 (en) 2021-02-26
US20190299276A1 (en) 2019-10-03
EP3546085A1 (en) 2019-10-02
CN108247015B (en) 2023-01-24

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